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Cheap flights from Louisville to Sydney from $674

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to Sydney departing on 9/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Louisville to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
3:25 pm - 7:00 am
SDF
-
SYD
25h 35m
2 stops
United Airlines Logo
9:30 am - 10:15 pm
SYD
-
SDF
26h 45m
2 stops
$1,344United Airlines
Wed, Jun 10 - Wed, Jun 17
United Airlines Logo
3:41 pm - 7:00 am
SDF
-
SYD
25h 19m
2 stops
United Airlines Logo
9:30 am - 8:01 pm
SYD
-
SDF
24h 31m
2 stops
$1,345United Airlines
Wed, Jun 10 - Wed, Jun 17
United Airlines Logo
2:10 pm - 6:55 am
SDF
-
SYD
26h 45m
2 stops
United Airlines Logo
10:20 am - 10:59 pm
SYD
-
SDF
26h 39m
2 stops
$1,506United Airlines
Mon, Jun 22 - Mon, Jul 6
Multiple Airlines Logo
9:21 am - 7:30 am
SDF
-
SYD
32h 09m
1 stop
Multiple Airlines Logo
12:00 pm - 5:32 pm
SYD
-
SDF
19h 32m
1 stop
$1,508Multiple Airlines
Wed, Jun 3 - Wed, Jun 10
United Airlines Logo
8:06 am - 7:00 am
SDF
-
SYD
32h 54m
2 stops
United Airlines Logo
10:20 am - 10:14 pm
SYD
-
SDF
25h 54m
2 stops
$1,514United Airlines
Fri, Aug 21 - Thu, Sep 10
Delta Logo
10:15 am - 6:50 am
SDF
-
SYD
30h 35m
2 stops
Delta Logo
9:15 am - 10:36 pm
SYD
-
SDF
27h 21m
2 stops
$1,515Delta
Wed, Sep 9 - Fri, Sep 18
Delta Logo
6:00 am - 6:50 am
SDF
-
SYD
34h 50m
2 stops
Delta Logo
9:15 am - 8:57 am
SYD
-
SDF
37h 42m
2 stops
$1,517Delta
Mon, Jun 1 - Sun, Jun 7
United Airlines Logo
3:25 pm - 8:00 am
SDF
-
SYD
25h 35m
2 stops
United Airlines Logo
11:50 am - 7:35 pm
SYD
-
SDF
22h 45m
1 stop
$1,518United Airlines
Thu, Oct 22 - Sat, Oct 31
United Airlines Logo
3:41 pm - 7:00 am
SDF
-
SYD
25h 19m
2 stops
United Airlines Logo
9:30 am - 8:23 pm
SYD
-
SDF
24h 53m
2 stops
$1,522United Airlines
Fri, Jun 5 - Tue, Jun 9
United Airlines Logo
3:25 pm - 7:00 am
SDF
-
SYD
25h 35m
2 stops
United Airlines Logo
10:30 am - 7:09 pm
SYD
-
SDF
23h 39m
2 stops
$1,523United Airlines
Fri, Oct 2 - Thu, Oct 15

American Airlines flights from Louisville to Sydney

Our best American Airlines deals on Louisville to Sydney flight tickets
American Airlines
Aug 26
SDF1:20 pmLouisville Intl
27h 45m
2 stops
SYD7:05 amSydney Kingsford Smith
Sep 5
SYD12:00 pmSydney Kingsford Smith
24h 17m
1 stop
SDF10:17 pmLouisville Intl
$1,960
American Airlines
Aug 26
SDF1:20 pmLouisville Intl
27h 45m
2 stops
SYD7:05 amSydney Kingsford Smith
Sep 5
SYD12:00 pmSydney Kingsford Smith
24h 17m
1 stop
SDF10:17 pmLouisville Intl
$1,961
American Airlines
Jun 22
SDF3:52 pmLouisville Intl
25h 03m
1 stop
SYD6:55 amSydney Kingsford Smith
Jul 6
SYD9:10 amSydney Kingsford Smith
22h 20m
2 stops
SDF5:30 pmLouisville Intl
$2,205

United Airlines flights from Louisville to Sydney

Our best United Airlines deals on Louisville to Sydney flight tickets
United Airlines
Jun 10
SDF3:25 pmLouisville Intl
25h 35m
2 stops
SYD7:00 amSydney Kingsford Smith
Jun 17
SYD9:30 amSydney Kingsford Smith
26h 45m
2 stops
SDF10:15 pmLouisville Intl
$1,344
United Airlines
Jun 10
SDF3:41 pmLouisville Intl
25h 19m
2 stops
SYD7:00 amSydney Kingsford Smith
Jun 17
SYD9:30 amSydney Kingsford Smith
24h 31m
2 stops
SDF8:01 pmLouisville Intl
$1,345
United Airlines
Jun 22
SDF2:10 pmLouisville Intl
26h 45m
2 stops
SYD6:55 amSydney Kingsford Smith
Jul 6
SYD10:20 amSydney Kingsford Smith
26h 39m
2 stops
SDF10:59 pmLouisville Intl
$1,506

momondo Fare Finder

 
Customize your flight search to find flights from Louisville to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated May 5, 2026.
Use the filters below to find and compare flights from Louisville to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 6/10

3:25 pm-7:00 am

2 stops25h 35m

Sydney Kingsford Smith

Wed 6/17

9:30 am-10:15 pm

2 stops26h 45m

$1,344

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 6/10

3:41 pm-7:00 am

2 stops25h 19m

Sydney Kingsford Smith

Wed 6/17

9:30 am-8:01 pm

2 stops24h 31m

$1,345

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 6/22

2:10 pm-6:55 am

2 stops26h 45m

Sydney Kingsford Smith

Mon 7/6

10:20 am-10:59 pm

2 stops26h 39m

$1,506

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 6/3

9:21 am-7:30 am

1 stop32h 09m

Sydney Kingsford Smith

Wed 6/10

12:00 pm-5:32 pm

1 stop19h 32m

$1,508

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Fri 8/21

8:06 am-7:00 am

2 stops32h 54m

Sydney Kingsford Smith

Thu 9/10

10:20 am-10:14 pm

2 stops25h 54m

$1,514

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 9/9

10:15 am-6:50 am

2 stops30h 35m

Sydney Kingsford Smith

Fri 9/18

9:15 am-10:36 pm

2 stops27h 21m

$1,515

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 6/1

6:00 am-6:50 am

2 stops34h 50m

Sydney Kingsford Smith

Sun 6/7

9:15 am-8:57 am

2 stops37h 42m

$1,517
Quickest round-trip

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 10/22

3:25 pm-8:00 am

2 stops25h 35m

Sydney Kingsford Smith

Sat 10/31

11:50 am-7:35 pm

1 stop22h 45m

$1,518

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Fri 6/5

3:41 pm-7:00 am

2 stops25h 19m

Sydney Kingsford Smith

Tue 6/9

9:30 am-8:23 pm

2 stops24h 53m

$1,522

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Fri 10/2

3:25 pm-7:00 am

2 stops25h 35m

Sydney Kingsford Smith

Thu 10/15

10:30 am-7:09 pm

2 stops23h 39m

$1,523

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Sydney from

How to get the cheapest flight ticket from Louisville to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Louisville and Sydney?

What is the cheapest month to fly to Sydney?

In general, August is the cheapest month to fly from Louisville to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,232. If you are unable to visit Sydney during the month of August, then departing from Louisville during the month October is also very affordable. Most momondo users find prices during this month for around $1,301.

Can stopping save me money on Louisville to Sydney flights?

You could potentially save up to 18% on your flight if you consider stops on a Louisville to Sydney flight.

When to book flights from Louisville to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Louisville to Sydney according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Louisville to Sydney (SDF to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to Sydney

Fastest flight time

25h 14m

Direct flights

None
The fastest flight from Louisville to Sydney takes 25h 14m
There are no direct flights from Louisville to Sydney. There are no popular flight routes from Louisville to Sydney.
Search flight deals

Frequently asked questions about flying from Louisville to Sydney

  • How far is Louisville Intl to Sydney Kingsford Smith by plane?

    A flight from Louisville Intl to Sydney Kingsford Smith will travel around 9284.6 mi. A reasonable flight in good conditions will take 25h 14m.

  • When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

    Prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

  • How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Sydney Kingsford Smith Airport.

  • What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

    The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Louisville to Sydney?

Best airlines flying from Louisville to Sydney

Compare and see reviews for airlines that fly from Louisville to Sydney with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $662Free CancellationRating
7.9
8,459 reviews
Search Delta flights
United AirlinesPriceFrom $973Free CancellationRating
7.4
9,683 reviews
Search United Airlines flights

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Bondi Beach
Katoomba
Wollongong
Penrith
Leura
Randwick
Coogee
Lithgow
Manly
Cronulla
Terrigal
Charlestown
Swansea

Why use momondo?

Why should I use momondo to find a flight deal from Louisville to Sydney?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Louisville to Sydney for you.

Can I find flights from Louisville to Sydney with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Louisville to Sydney flights to just show those with flexible booking policies.

How can momondo help me find flights from Louisville to Sydney?

momondo provides multiple filters to help you find the best flight to Sydney from Louisville. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Louisville to Sydney right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Louisville to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.

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